TY - JOUR
T1 - Preparation of 3D porous g-C3N4@V2O5 composite electrode via simple calcination and chemical precipitation for supercapacitors
AU - Zhou, Yaju
AU - Sun, Linlin
AU - Wu, Dongyao
AU - Li, Xin
AU - Li, Jinze
AU - Huo, Pengwei
AU - Wang, Huiqin
AU - Yan, Yongsheng
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/3/15
Y1 - 2020/3/15
N2 - The unique three-dimensional (3D) porous structure of graphite carbon nitride (g-C3N4) and vanadium pentoxide (V2O5) was prepared by an environmentally friendly one-step solvothermal method, and its electrochemical performance was assessed. Importantly, g-C3N4 is a low cost material with excellent chemical stability, and it supports the vertical charge transfer during the charge-discharge process, which promotes electronic transmission along this direction. In addition, V2O5 has good theoretical capacitance and is deemed as a potential electrode material for next-generation supercapacitors. Field emission scanning electron microscopy of the nanocomposite revealed a 3D porous morphology for g-C3N4 (3D PCN) and a spherical morphology for V2O5. This study estimated the viability of the graphite carbon nitride-based nanocomposite PCN@V2O5 as a new catalyst in the supercapacitor (SC) anodes. A series of SC anodes with different catalyst loadings were produced. The electrochemical behavior of the SC anodes was calculated by cyclic voltammetry (CV), charge-discharge and cycling test. When test in electrochemical performance, the ratio of PCN:V2O5 is lower than 1:1 and 3D PCN@V2O5 exhibits a lower specific capacity, the ratio of PCN:V2O5 is higher than 1:1 that most of the pores in 3D porous g-C3N4 are covered that reduces the electron transport rate and results in a lower specific capacity. Overall, 3D PCN@V2O5 has higher specific capacity (457 Fg-1 at 0.5 Ag-1) and better cycling performance (approximately 84% after 500 cycles). This attractive performance indicates that 3D PCN@V2O5 could be used as potential electrode materials for supercapacitors.
AB - The unique three-dimensional (3D) porous structure of graphite carbon nitride (g-C3N4) and vanadium pentoxide (V2O5) was prepared by an environmentally friendly one-step solvothermal method, and its electrochemical performance was assessed. Importantly, g-C3N4 is a low cost material with excellent chemical stability, and it supports the vertical charge transfer during the charge-discharge process, which promotes electronic transmission along this direction. In addition, V2O5 has good theoretical capacitance and is deemed as a potential electrode material for next-generation supercapacitors. Field emission scanning electron microscopy of the nanocomposite revealed a 3D porous morphology for g-C3N4 (3D PCN) and a spherical morphology for V2O5. This study estimated the viability of the graphite carbon nitride-based nanocomposite PCN@V2O5 as a new catalyst in the supercapacitor (SC) anodes. A series of SC anodes with different catalyst loadings were produced. The electrochemical behavior of the SC anodes was calculated by cyclic voltammetry (CV), charge-discharge and cycling test. When test in electrochemical performance, the ratio of PCN:V2O5 is lower than 1:1 and 3D PCN@V2O5 exhibits a lower specific capacity, the ratio of PCN:V2O5 is higher than 1:1 that most of the pores in 3D porous g-C3N4 are covered that reduces the electron transport rate and results in a lower specific capacity. Overall, 3D PCN@V2O5 has higher specific capacity (457 Fg-1 at 0.5 Ag-1) and better cycling performance (approximately 84% after 500 cycles). This attractive performance indicates that 3D PCN@V2O5 could be used as potential electrode materials for supercapacitors.
KW - 3D porous g-CN
KW - Electrochemical properties
KW - Transition metal oxides
KW - VO nanospheres
UR - http://www.scopus.com/inward/record.url?scp=85074694801&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2019.152707
DO - 10.1016/j.jallcom.2019.152707
M3 - 文章
AN - SCOPUS:85074694801
SN - 0925-8388
VL - 817
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 152707
ER -